Multifunctional fireproof safety power supply

The utility model provides a multifunctional fire safety power which comprises a transformer. A single-phase portion or a three-phase secondary portion of the transformer is provided with an induction device. An output terminal of the induction device is connected with an electronic controlled portion. A control device for turning on and turning off a switch group of a secondary main circuit of the transformer is controlled through an output of the electronic controlled portion. Data changes of current and voltage are induced by the induction device then sent to a control circuit. When induced data is above normal value, the main control circuit is broken for protection. The multifunctional fire safety power has ashort operating time which is safe and reliable with a low preparing cost and a simple circuit design.